Alt Clut
The ruler of Alt Clut was King Riderch map Eugein (Riderch II), who had ruled since 780 and would continue to do so until 796.
Dál Riata
This year was the last year of the rule of King Fergus mac Echdach.
Dumnonia
The ruler of Dumnonia during this time was either King Oswallt ap Cawrdolli or King Hernam ap Oswallt, the exact year of the succession is unknown.
Mercia
The ruler of Mercia was King Offa, who had ruled since 757 and would continue to do so until 796.
Northumbria
The ruler of Northumbria was King Ælfwald I, who had ruled since 779 and would continue to do so until 788.
Fortriu
The ruler of Fortriu was King Talorc II, who had ruled since 778 and would continue to do so until 782.